print.c

   1 #include <gtk/gtk.h>
   2
   3 #include "dive.h"
   4 #include "display.h"
   5
   6 static void draw_page(GtkPrintOperation *operation,
   7                         GtkPrintContext *context,
   8                         gint page_nr,
   9                         gpointer user_data)
  10 {
  11         cairo_t *cr;
  12         PangoLayout *layout;
  13         double w, h;
  14         struct graphics_context gc = { .printer = 1 };
  15
  16         cr = gtk_print_context_get_cairo_context(context);
  17         gc.cr = cr;
  18
  19         layout=gtk_print_context_create_pango_layout(context);
  20
  21         w = gtk_print_context_get_width(context);
  22         h = gtk_print_context_get_height(context);
  23
  24         /* Do the profile on the top half of the page.. */
  25         if (current_dive)
  26                 plot(&gc, w, h/2, current_dive);
  27
  28         pango_cairo_show_layout(cr,layout);
  29         g_object_unref(layout);
  30 }
  31
  32 static void begin_print(GtkPrintOperation *operation, gpointer user_data)
  33 {
  34 }
  35
  36 static GtkPrintSettings *settings = NULL;
  37
  38 void do_print(void)
  39 {
  40         GtkPrintOperation *print;
  41         GtkPrintOperationResult res;
  42
  43         print = gtk_print_operation_new();
  44         if (settings != NULL)
  45                 gtk_print_operation_set_print_settings(print, settings);
  46         gtk_print_operation_set_n_pages(print, 1);
  47         g_signal_connect(print, "begin_print", G_CALLBACK(begin_print), NULL);
  48         g_signal_connect(print, "draw_page", G_CALLBACK(draw_page), NULL);
  49         res = gtk_print_operation_run(print, GTK_PRINT_OPERATION_ACTION_PRINT_DIALOG,
  50                                          GTK_WINDOW(main_window), NULL);
  51         if (res == GTK_PRINT_OPERATION_RESULT_APPLY) {
  52                 if (settings != NULL)
  53                         g_object_unref(settings);
  54                 settings = g_object_ref(gtk_print_operation_get_print_settings(print));
  55         }
  56         g_object_unref(print);
  57 }